Perseus

Perseus, in the Greek mythology the son of Zeus and Danaë, and the
grandson of Acrisius, king of Argos, of whom it was predicted before his
birth that he would kill his grandfather, who at his birth enclosed both
his mother and him in a chest and cast it into the sea, which bore them
to an island where they became slaves of the king, Polydectes, who sought
to marry Danaë; failing in his suit, and to compel her to submission, he
ordered Perseus off to fetch him the head of the Medusa; who, aided by
Hermes and Athena, was successful in his mission, cut off the head of the
Medusa with the help of a mirror and sickle, brought it away with him in
a pouch, and after delivering and marrying Andromeda in his return
journey, exposed the head before Polydectes and court at a banquet, which
turned them all into stone, whereupon he gave the Gorgon's head to Athena
to place on her shield, and set out for Argos; Acrisius hearing of his
approach fled, but was afterwards killed accidentally by his grandson,
who in throwing a discus had crushed his foot.